The CWNA exam is being updated to PW0-105
The CWNA exam is being updated to PW0-105 on May 4, 2012. The current version of the CWNA exam, PW0-104, will be available until July 31, 2012. You can download the new PW0-105 exam objectives here and see what changed from the 104 objectives to the 105 objectives here.
More info here